[goodness]

I just tried it with my old bike route to work. It actually did pick the route I used. In this case, the route is just the shortest path instead of the roads with the fastest driving time.

I also tried http://maps.cloudmade.com that someone recommended above. That one didn't pick my route. It picked the shortest driving time route. I guess this makes sense, since looking at http://opencyclemap.org, I don't see any bike maps listed near my house.

Incidentally, I just noticed that Google maps also has an option to get directions for public transportation, at least in my city. That's pretty cool. I knew there were buses running near me, but I hadn't ever taken the time to look them up.